The influence of peri-conception and first trimester dietary restriction of protein in cattle on meat quality traits of entire male progeny

Meat Sci. 2016 Nov;121:141-147. doi: 10.1016/j.meatsci.2016.06.006. Epub 2016 Jun 9.

Abstract

Primiparous Santa Gertrudis heifers were used to evaluate the effects of gestational dietary protein content on meat quality traits of 20month old bull progeny (n=40). At -60d before AI, heifers were randomly allocated to HIGH or LOW protein diet (HPERI and LPERI). From 24dpc, half of each treatment group changed to an alternative post-conception HIGH or LOW protein diet (HPOST and LPOST). LPERI and LPOST diets resulted in higher shear force of the semitendinosus muscle than HPERI (P=0.053) and HPOST (P=0.003), respectively. Heat-soluble collagen in the semitendinosus muscle was lower (P=0.019) for LPERI than HPERI. Collagen and tenderness of the longissimus muscle were not affected by dam nutrition (P>0.05). Color, pH, sarcomere length, cooking loss, compression values, desmin and troponin-T degradation, fiber type, intramuscular fat and polyunsaturated fatty acid content were not affected by dam nutrition during the peri-conception and first trimester gestational period (P>0.05).

Keywords: Collagen; Fatty acid; Fiber type; Maternal nutrition; Post mortem proteolysis; Tenderness.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adipose Tissue / chemistry
  • Animal Feed / analysis*
  • Animal Nutritional Physiological Phenomena*
  • Animals
  • Cattle
  • Collagen / chemistry
  • Color
  • Cooking
  • Desmin / metabolism
  • Diet / veterinary*
  • Dietary Fats / analysis
  • Dietary Proteins / administration & dosage*
  • Fatty Acids, Unsaturated / analysis
  • Female
  • Food Quality
  • Hydrogen-Ion Concentration
  • Male
  • Meat
  • Muscle Proteins / chemistry
  • Muscle, Skeletal / chemistry
  • Phenotype
  • Pregnancy
  • Pregnancy, Animal*
  • Red Meat / analysis*
  • Sarcomeres / chemistry
  • Troponin T / metabolism

Substances

  • Desmin
  • Dietary Fats
  • Dietary Proteins
  • Fatty Acids, Unsaturated
  • Muscle Proteins
  • Troponin T
  • Collagen